Sprinkle igt_assert(ptr) after gem_mmap__{cpu,gtt,wc}

Do the following
 ptr = gem_mmap__{cpu,gtt,wc}()
+igt_assert(ptr);

whenever the code doesn't handle the NULL ptr in any kind of
specific way.

Makes it easier to move the assert into gem_mmap__{cpu,gtt,wc}() itself.

Mostly done with coccinelle, with some manual cleanups:
@@
identifier I;
@@
<... when != igt_assert(I)
     when != igt_require(I)
     when != igt_require_f(I, ...)
     when != I != NULL
     when != I == NULL
(
  I = gem_mmap__gtt(...);
+ igt_assert(I);
|
  I = gem_mmap__cpu(...);
+ igt_assert(I);
|
  I = gem_mmap__wc(...);
+ igt_assert(I);
)
...>

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Stochastically-reviwewed-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 1 insertions, 0 deletions

diff --git a/tests/gem_mmap.c b/tests/gem_mmap.c
index 49e72596..41884292 100644
--- a/tests/gem_mmap.c
+++ b/tests/gem_mmap.c
@@ -167,6 +167,7 @@ igt_main
 		igt_assert(OBJECT_SIZE > 4096);
 		arg.handle = gem_create(fd, OBJECT_SIZE);
 		addr = gem_mmap__cpu(fd, arg.handle, 0, 4096, PROT_WRITE);
+		igt_assert(addr);
 		memset(addr, 0, 4096);
 		munmap(addr, 4096);
 		gem_close(fd, arg.handle);